[Git][cmucl/cmucl][master] Fix #36: encode-universal-time errors on valid time

[Raymond Toy]

Raymond Toy pushed to branch master at cmucl / cmucl


Commits:
0e172b4b by Raymond Toy at 2016-11-10T19:13:53-08:00
Fix #36: encode-universal-time errors on valid time

Allow 1899 as a year, but also add a check that the resulting time is
a non-negative integer.

Add a test for this too in issues.lisp.

- - - - -


2 changed files:

- src/code/time.lisp
- tests/issues.lisp


Changes:

=====================================
src/code/time.lisp
=====================================
--- a/src/code/time.lisp
+++ b/src/code/time.lisp
@@ -223,8 +223,11 @@
 	   (type (mod 24) hour)
 	   (type (integer 1 31) date)
 	   (type (integer 1 12) month)
-	   (type (or (integer 0 99) (integer 1900)) year)
-	   (type (or null rational) time-zone))
+	   ;; 1899 to account for time zones that are equivalent to 1900.
+	   (type (or (integer 0 99) (integer 1899)) year)
+	   (type (or null rational) time-zone)
+	   ;; Result must be non-negative integer!
+	   (values (integer 0)))
   (let* ((year (if (< year 100)
 		   (pick-obvious-year year)
 		   year))


=====================================
tests/issues.lisp
=====================================
--- a/tests/issues.lisp
+++ b/tests/issues.lisp
@@ -347,3 +347,8 @@
     (assert (null (set-difference directories
                                   '(".dir" "dir")
                                   :test #'string-equal)))))
+
+(define-test issue.36
+    (:tag :issues)
+  (loop for k from 1 to 24 do
+    (assert-equal 0 (encode-universal-time 0 0 (- 24 k) 31 12 1899 k))))



View it on GitLab: https://gitlab.common-lisp.net/cmucl/cmucl/commit/0e172b4b2d6dc5a6dd016c0803a2a98955ffe8f3
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